.download{
	position: absolute;
	width: 100%;
	height: 100%;
    background: url(/static/img/mobile_down_bg.png?v=150811);
    background-repeat: no-repeat;
    background-position: center center;
    -webkit-background-size: cover;
    background-size: cover;
}
.android-btn:active{
  background-position: 0 -96px;
}
.android-btn{
    display: block;
    position: absolute;
    top: 83%;
    width: 292px;
    height: 95px;
    background: url(/static/img/mobile_down_btn.png?v=150811);
    background-repeat: no-repeat;
    background-position: center center;
    -webkit-background-size: cover;
    background-size: cover;
    margin-left: 27%;
}
.balloon {
	position: absolute;
	top: 26%;
	width: 144px;
	height: 80px;
	background: url(/static/img/balloon.png?v=150811);
	background-repeat: no-repeat;
	background-position: center center;
	-webkit-background-size: cover;
	background-size: contain;
	animation:balloon-float 2s infinite alternate linear;
	-webkit-animation:balloon-float 2s infinite alternate linear;
	-moz-animation:balloon-float 2s infinite alternate linear;
	-o-animation:balloon-float 2s infinite alternate linear;
	-ms-animation:balloon-float 2s infinite alternate linear;
}
@keyframes balloon-float {
    100% { top: 30.5%; }
}

@-webkit-keyframes balloon-float {
    100% { top: 30.5%; }
}

@-moz-keyframes balloon-float {
    100% { top: 30.5%; }
}

@-ms-keyframes balloon-float {
    100% { top: 30.5%; }
}

@-o-keyframes balloon-float {
    100% { top: 30.5%; }
}